com.lucene.analysis
Class LetterTokenizer

java.lang.Object
  |
  +--com.lucene.analysis.TokenStream
        |
        +--com.lucene.analysis.Tokenizer
              |
              +--com.lucene.analysis.LetterTokenizer

public final class LetterTokenizer

extends Tokenizer

A LetterTokenizer is a tokenizer that divides text at non-letters. That's to say, it defines tokens as maximal strings of adjacent letters, as defined by java.lang.Character.isLetter() predicate. Note: this does a decent job for most European languages, but does a terrible job for some Asian languages, where words are not separated by spaces.

Fields inherited from class com.lucene.analysis.Tokenizer

input

Constructor Summary

LetterTokenizer(Reader in)

Method Summary

Token

next() Returns the next token in the stream, or null at EOS.

Methods inherited from class com.lucene.analysis.Tokenizer

close

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

LetterTokenizer

public LetterTokenizer(Reader in)

Method Detail

next

public final Token next()
                 throws IOException

Description copied from class: TokenStream

Returns the next token in the stream, or null at EOS.

Overrides:

next in class TokenStream